CSLB General Building (B) Trade Practice Test
Preguntas frecuentes
¿Cuántas preguntas de práctica de California Esthetician hay aquí?+
Un banco completo de preguntas originales de California Esthetician en las áreas oficiales, con el peso del examen real y explicaciones. Gratis, sin registro.
¿Cómo es el examen California Esthetician?+
Unas 100 preguntas, 90 minutos, y necesitas 75% para aprobar. Practica por tema aquí y luego haz el simulacro cronometrado para medir tu preparación.
¿Estas son las preguntas reales del examen?+
No. Cada pregunta es 100% original, escrita de fuentes públicas con explicaciones. Nunca copiamos preguntas reales ni material de preparación pagado.
¿Puedo estudiar en chino o español?+
La práctica de PrepPass está en inglés, 中文 y español. El examen oficial es en inglés — cambia el idioma de las preguntas a inglés para ensayar la terminología del día del examen.
Preguntas de práctica de ejemplo
Algunas preguntas reales de este banco gratuito, con explicaciones completas. Usa la herramienta de arriba para el banco completo.
- 1. Disinfection & Safety
An esthetician has just finished using stainless steel tweezers on a client. What must happen before the tweezers are immersed in disinfectant?
- a.They must be immersed while still soiled so the disinfectant reaches the debris
- b.They must be washed with soap and water, rinsed, and dried
- c.They must be wiped with a dry towel and returned to the drawer
- d.They must be rinsed in cool water only, since soap deactivates disinfectant
Respuesta: b
Explicación: Disinfectant cannot penetrate oils, makeup, or skin debris, so every implement must first be cleaned with soap and water, rinsed, and dried before full immersion for the labeled contact time. Immersing a soiled implement wastes the solution and leaves organisms alive. Dry-wiping and storing removes nothing. Soap does not deactivate a properly used disinfectant when the tool is rinsed and dried first.
Fuente: CCR Title 16 §979
- 2. Disinfection & Safety
What must be true of a disinfectant used on implements in a California skin care establishment?
- a.It must be a household bleach product of any concentration
- b.It must be a fragrance-free hand soap
- c.It must be EPA-registered, hospital-grade, and labeled bactericidal, fungicidal, and virucidal, and used per label directions
- d.It must be 100 percent isopropyl alcohol
Respuesta: c
Explicación: The Board requires an EPA-registered, hospital-grade product with bactericidal, fungicidal, and virucidal claims, mixed and used exactly as the label directs. Hand soap is a cleaner, not a disinfectant. Undiluted or arbitrary bleach concentrations are not label-compliant, and pure alcohol evaporates too fast to hold a contact time and is not an accepted implement disinfectant.
Fuente: CCR Title 16 §979
- 3. Disinfection & Safety
A loyal client says she is comfortable with the esthetician re-dipping her wax stick because 'it's only my own germs.' How should the esthetician respond?
- a.Explain that the wax pot is shared with all clients, so no re-dipping is permitted regardless of client preference
- b.Agree, because a client may waive sanitation rules for her own service
- c.Re-dip only once and note it on the client's chart
- d.Re-dip but discard the top layer of wax afterward
Respuesta: a
Explicación: A client cannot consent away a health and safety rule, because the contamination risk falls on every other client who uses that shared pot. Documenting the violation or skimming the surface does not remove organisms that have already dispersed into the wax. The correct answer is a clear explanation and a fresh applicator for every dip.
Fuente: CCR Title 16 §979
- 4. Skin Sciences
Which sequence correctly lists the layers of the epidermis from deepest to most superficial?
- a.Stratum corneum, lucidum, granulosum, spinosum, basale
- b.Stratum granulosum, basale, spinosum, lucidum, corneum
- c.Stratum basale, spinosum, granulosum, lucidum, corneum
- d.Stratum spinosum, basale, corneum, granulosum, lucidum
Respuesta: c
Explicación: New cells are produced in the stratum basale and travel upward through the spinosum, granulosum, and lucidum before reaching the corneum, the dead keratinized surface layer. The other sequences reverse or scramble the order. Remembering that the basale sits on the dermis and the corneum faces the outside world makes the direction easy to recall.
- 5. Skin Sciences
A client shows symmetrical brown patches across the cheeks and upper lip that appeared during pregnancy. What is the most likely condition and the most important home care advice?
- a.Rosacea; avoid all moisturizers
- b.Vitiligo; increase sun exposure
- c.Melasma; use daily broad-spectrum sun protection because UV and heat worsen the pigmentation
- d.Eczema; apply an exfoliating acid twice daily
Respuesta: c
Explicación: Melasma is a hormonally influenced hyperpigmentation that typically appears as symmetrical patches on the cheeks, forehead, and upper lip and is strongly aggravated by UV exposure and heat, so daily broad-spectrum sunscreen is the foundation of any protocol. Rosacea presents as redness and papules, vitiligo is a loss of pigment, and eczema is an inflammatory dermatitis, none of which match the description.
- 6. Skin Sciences
Which statement about the skin's glands is accurate?
- a.Sebaceous glands secrete sebum that lubricates the skin, while sudoriferous glands excrete perspiration that helps regulate temperature
- b.Sebaceous glands regulate temperature and sudoriferous glands produce oil
- c.Both gland types produce only sebum
- d.Neither gland type is affected by hormones
Respuesta: a
Explicación: Sebaceous glands are attached to hair follicles and produce sebum, and sudoriferous (sweat) glands excrete perspiration for thermoregulation and waste removal. Their roles are not interchangeable. Sebaceous activity is strongly influenced by androgens, which is why oiliness and breakouts often shift with hormonal changes.
- 7. Facial Treatments
Which mask selection best matches the skin condition?
- a.Clay or kaolin mask for oily, congested skin, and a hydrating gel or cream mask for dry or dehydrated skin
- b.Clay mask for dry, sensitized skin and a heavy occlusive balm for oily skin
- c.Any mask can be used on any skin type since masks stay on only briefly
- d.A strong drying mask for rosacea-prone skin to reduce redness
Respuesta: a
Explicación: Clay and kaolin absorb excess sebum and are suited to oily, congested skin, while gel and cream masks deliver water and emollients to dry or dehydrated skin. Applying a drying clay mask to already dry or reactive skin worsens barrier damage, and occlusive balms on oily skin encourage congestion. Contact time does not make an inappropriate mask harmless.
- 8. Facial Treatments
Before applying wax to a client's skin, what must the esthetician do with the wax temperature?
- a.Assume the thermostat setting is accurate and begin
- b.Test the temperature on her own inner wrist or another approved test site, and confirm it is comfortable before contact with the client
- c.Ask the client to touch the wax pot to judge the heat
- d.Heat the wax as hot as possible so it spreads more easily
Respuesta: b
Explicación: Thermostats drift and wax heats unevenly, so a temperature test on the practitioner before every client is the safeguard against burns. Trusting the dial alone has produced many injuries. Asking the client to touch the pot exposes her to the burn risk directly, and deliberately overheating wax is the most common cause of thermal injury during hair removal.
Fuente: CCR Title 16
- 9. Chemistry & Electricity
A product label states a pH of 3.5. What does this tell the esthetician?
- a.The product is alkaline and will soften the acid mantle
- b.The product is neutral, like pure water
- c.The product is acidic, and because the scale is logarithmic it is significantly more acidic than a pH 5.5 product
- d.The pH value describes the product's thickness, not its acidity
Respuesta: c
Explicación: A pH below 7 is acidic, 7 is neutral, and above 7 is alkaline, and each whole number represents a tenfold change, so pH 3.5 is roughly a hundred times more acidic than pH 5.5. That difference matters because low-pH exfoliating products act more aggressively on the skin. pH describes hydrogen ion concentration, not viscosity.
- 10. California Law
Which of the following is outside the scope of practice of a California licensed esthetician?
- a.Operating a laser to remove hair or pigment
- b.Applying a superficial exfoliating product to the epidermis
- c.Removing hair with wax or tweezers
- d.Applying makeup and performing a lash tint
Respuesta: a
Explicación: Lasers and other light-based devices that alter living tissue are considered medical procedures and may not be operated under an esthetician license. Superficial exfoliation of the epidermis, temporary hair removal by waxing or tweezing, and makeup and lash services are all core esthetic services. The dividing line is whether the procedure affects living tissue below the surface.
Fuente: CA Business & Professions Code